snapshot symlinked to initial_snapshot.vtu. This eliminates possibility of ...

Samo Penic

2016-05-18 354145cb4c260bdd7ef3dafcdae206e2d00d4d3a

 python/trisurf/trisurf.py

@@ -12,13 +12,15 @@
import psutil
import time
import datetime
from subprocess import call, Popen
import subprocess
import shutil

# Process status
TS_NOLOCK=0 # lock file does not exist
TS_NONEXISTANT=0 # process is not in the list of processes
TS_STOPPED=1 # the process is listed, but is in stopped state
TS_RUNNING=2 # process is running
TS_COMPLETED=3 #simulation is completed

class FileContent:
   '''
@@ -142,7 +144,9 @@
      '''Method makeifnotexist() creates directory if it does not exist.'''
      if(self.exists()==0):
         self.make()
      return
         return True
      else:
         return False

   def remove(self):
      '''Method remove() removes directory recursively. WARNING! No questions asked.'''
@@ -195,19 +199,30 @@
      Internal method for determining the number of the lines in the most efficient way. Is it really the most efficient?
      '''
      f = open(self.fullname, "r+")
      buf = mmap.mmap(f.fileno(), 0)
      lines = 0
      readline = buf.readline
      while readline():
         lines += 1
      try:
         buf = mmap.mmap(f.fileno(), 0)
         lines = 0
         readline = buf.readline
         while readline():
            lines += 1
         f.close()
      except:
         lines=0
         f.close()
      return lines

		
   def read(self):
      '''
      Method read() reads the statistics if it exists. It sets local variable dT storing the time differential between two intervals of simulation (outer loops). It also stores last simulation loop and the start of the run.
      '''
      if(self.exists()):
      #   epoch1=0
      #   epoch2=0
      #   n1=0
      #   n2=0
         nlines=self.mapcount()
         if nlines<2:
            return(False)
         try:
            with open(self.fullname, "r+") as fin:
               i=0;
@@ -228,8 +243,10 @@
      else:
         #print("File "+self.fullname+" does not exists.\n")
         return(False)

      self.dT=(int(epoch2)-int(epoch1))/(int(n2)-int(n1))
      try:
         self.dT=(int(epoch2)-int(epoch1))/(int(n2)-int(n1))
      except:
         self.dT=0
      self.last=n2
      self.startDate=epoch1
      return(True)
@@ -246,13 +263,13 @@
   '''
   Class Runner consists of a single running or terminated instance of the trisurf. It manages starting, stopping, verifying the running process and printing the reports of the configured instances.
   '''
   def __init__(self, subdir='run0', tape='', snapshot='', runArgs=[]):
   def __init__(self, subdir='run0', tape=None, snapshot=None, runArgs=[]):
      self.subdir=subdir
      self.runArgs=runArgs
      self.fromSnapshot=False
      if(tape!=''):
      if(tape!=None):
         self.initFromTape(tape)
      if(snapshot!=''):
      if(snapshot!=None):
         self.initFromSnapshot(snapshot)
      return

@@ -260,6 +277,7 @@
   def initFromTape(self, tape):
      self.tape=Tape()
      self.tape.readTape(tape)
      self.tapeFile=tape

   def initFromSnapshot(self, snapshotfile):
      try:
@@ -277,7 +295,7 @@

   def getPID(self):
      self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
      self.Dir.makeifnotexist()
      #self.Dir.makeifnotexist()
      try:
         fp = open(os.path.join(self.Dir.fullpath(),'.lock'))
      except IOError as e:
@@ -286,14 +304,40 @@
      fp.close()
      return int(pid)

   def getLastIteration(self):
      self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
      #self.Dir.makeifnotexist()
      try:
         fp = open(os.path.join(self.Dir.fullpath(),'.status'))
      except IOError as e:
         return -1 #file probably does not exist. e==2??
      status=fp.readline()
      fp.close()
      return int(status)

   def isCompleted(self):
      if (int(self.tape.getValue("iterations"))==self.getLastIteration()+1):
         return True
      else:
         return False

   def getStatus(self):
      pid=self.getPID()
      if(self.isCompleted()):
         return TS_COMPLETED
      if(pid==0):
         return TS_NOLOCK
      if(psutil.pid_exists(int(pid))):
         proc= psutil.Process(int(pid))
         if proc.name=="trisurf":
            if proc.status=="stopped":
         #psutil.__version__ == '3.4.2' requires name() and status(), some older versions reguire name, status
         if(psutil.__version__>='2.0.0'):
            procname=proc.name()
            procstat=proc.status()
         else:
            procname=proc.name
            procstat=proc.status
         if procname=="trisurf":
            if procstat=="stopped":
               return TS_STOPPED
            else:
               return TS_RUNNING
@@ -303,20 +347,52 @@
         return TS_NONEXISTANT

   def start(self):
      if(self.getStatus()==0):
      if(self.getStatus()==0 or self.getStatus()==TS_COMPLETED):
         #check if executable exists
         if(shutil.which('trisurf')==None):
            print("Error. Trisurf executable not found in PATH. Please install trisurf prior to running trisurf manager.")
            exit(1)
         self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
         self.Dir.makeifnotexist()
#Symlinks tape file to the directory or create tape file from snapshot in the direcory...
         if(self.Dir.makeifnotexist()):
            if(self.fromSnapshot==False):
               try:
                  os.symlink(os.path.abspath(self.tapeFile), self.Dir.fullpath()+"/tape")
               except:
                  print("Error while symlinking "+os.path.abspath(self.tapeFile)+" to "+self.Dir.fullpath()+"/tape")
                  exit(1)
            else:
               try:
                  with open (os.path.join(self.Dir.fullpath(),"tape"), "w") as myfile:
                     myfile.write("#This is automatically generated tape file from snapshot")
                     myfile.write(str(self.tape))
               except:
                  print("Error -- cannot make tapefile  "+ os.path.join(self.Dir.fullpath(),"tape")+" from the snapshot in the running directory")
                  exit(1)
               try:
                  os.symlink(os.path.abspath(self.snapshotFile), os.path.join(self.Dir.fullpath(),"initial_snapshot.vtu"))
               except:
                  print("Error while symlinking "+os.path.abspath(self.snapshotFile)+" to "+os.path.join(self.Dir.fullpath(),self.snapshotFile))
		
         #check if the simulation has been completed. in this case notify user and stop executing.
         if(self.isCompleted() and ("--force-from-tape" not in self.runArgs) and ("--reset-iteration-count" not in self.runArgs)):
            print("The simulation was completed. Not starting executable in "+self.Dir.fullpath())
            return

         cwd=Directory(maindir=os.getcwd())
         self.Dir.goto()
         print("Starting trisurf-ng executable at "+self.Dir.fullpath()+"\n")
         print("Starting trisurf-ng executable in "+self.Dir.fullpath())
         if(self.fromSnapshot==True):
            params=["trisurf", "--restore-from-vtk",self.snapshotFile]+self.runArgs
            params=["trisurf", "--restore-from-vtk","initial_snapshot.vtu"]+self.runArgs
         else:
            #veify if dump exists. If not it is a first run and shoud be run with --force-from-tape
            if(os.path.isfile("dump.bin")==False):
               self.runArgs.append("--force-from-tape")
            params=["trisurf"]+self.runArgs
         Popen (params, stdout=False)
         subprocess.Popen (params, stdout=subprocess.DEVNULL)
         cwd.goto()
      else:
         print("Process already running. Not starting\n")
         print("Process in "+self.Dir.fullpath()+" already running. Not starting.")
      return

   def stop(self):
@@ -341,20 +417,28 @@
      self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
      self.statistics=Statistics(self.Dir.fullpath(), statfile)
      self.Comment=FileContent(os.path.join(self.Dir.fullpath(),".comment"))
      pid=self.getPID();
      pid=self.getPID()
      status=self.getStatus()
      if(self.statistics.fileOK):
         ETA=str(datetime.timedelta(microseconds=(int(self.tape.config['iterations'])-int(self.statistics.last))*self.statistics.dT)*1000000)
      if(status==TS_NONEXISTANT or status==TS_NOLOCK):
         statustxt="Not running"
         pid=""
         ETA=""
      elif status==TS_STOPPED:
         statustxt="Stopped"
         ETA="N/A"
      elif status==TS_COMPLETED:
         statustxt="Completed"
         pid=""
         ETA=""
      else:
         statustxt="Running"

      if(self.statistics.fileOK):
         report=[time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(int(self.statistics.startDate))),str(datetime.timedelta(microseconds=(int(self.tape.config['iterations'])-int(self.statistics.last))*self.statistics.dT)*1000), statustxt, pid, str(self.Dir.fullpath()), self.Comment.getText()]
         report=[time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(int(self.statistics.startDate))),ETA, statustxt, pid, str(self.Dir.fullpath()), self.Comment.getText()]
      else:
         report=["N/A","N/A\t",statustxt, pid, str(self.Dir.fullpath()), self.Comment.getText()]
         report=["N/A","N/A",statustxt, pid, str(self.Dir.fullpath()), self.Comment.getText()]
      return report

   def writeComment(self, data, mode='w'):